'argument' : non-constant default arguments unavailable when importing NGWS runtime function
This warning results when you use a non-constant value as an argument to a NGWS function that is called when you #import its module. NGWS metadata can only represent constants as values for default arguments to functions. The default argument would still work as expected when #import is not used.
The following code will produce warning C4560 if you #import the module:
int i; void f(int j = i){ //error; i is non-constant }
Solution
Remove the default argument or find a constant to use as a default instead.